Microsoft and Bungie today announced that the latest Halo 3 map pack will be available on April 15th. The Legendary Map Pack will set you back 800 points on Xbox LIVE Marketplace and includes three new maps; Ghost Town, Avalanche and an as yet unannounced map.

Ghost Town is a battle-scarred maze of narrow passages and dangerous ruins outside the once-prosperous city of Voi. Collapsed ceilings and shell-battered buildings provide both valuable cover and deadly traps, as catwalks and stairways take the fight from claustrophobic ground combat to dizzying rooftop battles. Ghost Town is a mid-sized map ideal for Team Slayer games and smaller, objective types.

The second map, Avalanche, is a tribute to Sidewinder, a "Halo: Combat Evolved" fan-favourite. This massive, vehicle-oriented objective map adds a twist to its classic predecessor with all new interiors, dramatically reshaped exteriors and brand new vehicle variants. Take a ride and admire the visual variety from the cockpit of the retuned Hornet.

The third map to be included in the Legendary Pack has yet to be announced, but stay tuned to Bungie.net for full details on another returning classic… fans of smaller Slayer maps, it's time to get excited.